Wireless Power Transfer by Electric Field Resonance and Its Application in Dynamic Charging
Wireless Power Transfer by Electric Field Resonance and Its Application in Dynamic Charging
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DOI：
10.1109/tie.2016.2577625
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发表时间：
2016-06
影响因子：
7.7
通讯作者：
Siqi Li;Zhe Liu;Han Zhao;Liyan Zhu;Chunyan Shuai;Zheng Chen
中科院分区：
文献类型：
--
作者：
Siqi Li;Zhe Liu;Han Zhao;Liyan Zhu;Chunyan Shuai;Zheng Chen
在本文中，电场谐振（EFR）的方法，类似于四线圈配置的磁场谐振无线电力传输，提出了电容耦合电力传输。推导并分析了该方法的特点。采用EFR方法，不仅可以实现电源的单位功率因数，而且可以实现电容耦合级的高功率因数和低无功功率。通过EFR方法实现了有效的功率传输。基于所提出的方法，提出了一种铁路车辆动态收费的概念。设计并搭建了一个原型供电系统，验证了该方法的有效性。分析，模拟和实验结果给出和比较。一个23厘米的模型车放在一个150厘米的轨道上。它示出，约700-W的功率是通过一个24-pF的耦合电容器传输。所提出的方法达到91%的DC-DC总效率在开关频率2 MHz。
In this paper, the electric field resonance (EFR) method, similar to the four-coil configuration of the magnetic field resonance wireless power transfer, is proposed for the capacitive coupling power transfer. The characteristics of the proposed method are derived and analyzed. With the EFR method, not only unity power factor for the power source is achieved, but also high power factor and low reactive power for the capacitive coupling stage are achieved. Effective power transfer is realized by the EFR method. Based on the proposed method, a dynamic charging concept for railway vehicles is then proposed. A prototype powering system is designed and built to prove the validity of the proposed method. Analytical, simulation, and experimental results are given and compared. A 23-cm model vehicle is put on a 150-cm track. It is shown that about 700-W power is transferred through a 24-pF coupling capacitor. The proposed method reaches 91% dc-dc overall efficiency at switching frequency 2 MHz.